Question 20: Current Electricity

Question

In the following circuit, assuming point A to be at zero potential, then what is the potential at point B?

Accepted Answer

Using Kirchhoff's loop law, in loop BDCR
1
B, we get
2 $$	imes$$ 2 + 3R
1
= 4 or R
1
= 0
$$	herefore$$ Potential drop at B = Potential drop at C
$$\Rightarrow$$ V
B
= V
C
= 2 + V
A
= 2 + 0 [$$\because$$ V
A
= 0, given]
$$\Rightarrow$$ V
B
= 2 V

Answer

1 V

Answer

2 V

Answer

4 V

Answer

3 V

Current Electricity

In the following circuit, assuming point A to be at zero potential, then what is the potential at point B?

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